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DurationScale.java
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package act.metric;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
import org.osgl.util.E;
import org.osgl.util.S;
enum DurationScale {
ns(1),
ms(1000L * 1000L),
second("s", 1000L * 1000L * 1000L),
minute("min", 1000L * 1000L * 1000L * 60L),
hour("h", 1000L * 1000L * 1000L * 60L * 60L),
day("d", 1000L * 1000L * 1000L * 60L * 60L * 24L),
week(" week(s)", 1000L * 1000L * 1000L * 60L * 60L * 24L * 7L),
mon(" month(s)", 1000L * 1000L * 1000L * 60L * 60L * 24L * 30L),
year(" year(s)", 1000L * 1000L * 1000L * 60L * 60L * 24L * 365L)
;
long value;
String suffix;
DurationScale(long value) {
this.value = value;
}
DurationScale(String suffix, long value) {
this.value = value;
this.suffix = suffix;
}
public static String format(long ns) {
E.illegalArgumentIf(ns < 0, "duration cannot be negative number");
if (ns == 0) {
return "0";
}
DurationScale last = DurationScale.year;
for (DurationScale s : DurationScale.values()) {
if (s.value <= ns) {
last = s;
} else {
break;
}
}
String s;
if (last == DurationScale.ns) {
if (ns > 1000L * 10) {
last = DurationScale.ms;
long l = (ns * 100L) / last.value;
s = S.str(l).prepend("0").insert(-2, '.').toString();
} else {
s = S.string(ns);
}
} else {
long l = ns / (last.value / 100L);
s = S.str(l).insert(-2, '.').toString();
}
if (s.startsWith(".")) {
s = S.concat("0", s);
}
return S.concat(s, last.suffix);
}
private String suffix() {
String suffix = this.suffix;
if (null == suffix) {
suffix = this.name();
}
return suffix;
}
}